Laura Lo Forti (left) and Damaris Webb, co-organizers of the Vanport Mosaic Festival, pose outside the Interstate Firehouse Cultural Center on North Interstate Avenue, showcasing one of the primary event venues for the annual celebration taking place this long Memorial Day weekend on the 70th anniversary of the Vanport Flood. The IFCC will host several exhibitions, like Vanport: The Surge of Social Change; Anywhere but Here: The History of Housing and Discrimination in Oregon; and Our City, Our Voice: Excavating Portland’s History through Art. A new play about displacement in Portland, “Left Hook,” will also make its world premiere at the IFCC on Thursday.